Perhaps the commonest, but also the most important, lily from this region. It is available in many forms and has played a vital part in producing many good hybrids. L. PARRY1 (California and Arizona). Like L. pardalinum this yellow scented lily has played an important part in hybridisation, but it is a fastidious plant in cultivation. L PARVUM (California). This species comes yellow from lower regions and red from higher altitudes. There is also a pink form called hallidayi, and none of them are too demanding. L. PHILADELPH1CUM (Eastern and mid-west North America). This lily has orange-red upright blooms. In cultivation it can be grown to maturity, but it has proved persistently hard to maintain thereafter. L. POLY.PHYLLUM (Himalayas). An ivory-white lily, sometimes spotted and sweetly scented and would seem to require careful attention. L. POMPONIUM (Southern Europe). A striking sealing-wax red turkscap accepting both acid and limestone soils, but enjoying an open, warm situation. I. PUMILUM (Eastern Asia). A charming red turkscap of fairly dwarf stature needing an open situation. Not long-lived, but easily raised from seed. I. PYRENAICUM (Europe). Usually with yellow turkscap flowers, it has, with L. martagon, the reputation of being one of the easiest lilies to grow in Britain, having become naturalised in some western counties. L. REGALE (China). The most common trumpet lily found in gardens. It is accommodating in most soils, can be easily and quickly raised from seed, even in the open ground, and can hold its own against many fancy hybrids. L RUBELLUM (Japan). A pink trumpet lily which is long-lived and a beautiful addition to the woodland garden. I. SARGENTIAE (China). A fine long trumpet of excellent form and coloration on a white ground. L SPECIOSUM (Japan). This is our most important late-flowering lily, continuing the season through September. It has a strong constitution. The flowers are reflexed, white or suffused carmine in varying degrees. I. SUPERBUM (Eastern U.S.A.). It lives up to its name, being a tall and majestic orange turkscap. It comes from wet areas and usually blooms in August. L. SZOVITSIANUM (Caucasus). The most widely grown species of a yellow-flowered group, including L. monadelphum, L. kesselringianum, L. ledebourii and L. kossii. The flowers are recurved, but not turkscap, and strongly scented. A successful cross between L. monadelphum and L. candidum, producing L. 'June Fragrance' was a great achievement a few years ago. L. TSINGTAUENSE (Korea). Although a member of the martagon group, this lily has upright red flowers. It is a good grower and a useful parent. I. VOLLMERI (Western U.S.A.). This looks like a lesser form of L. pardalinum but is far better than that suggests. Within its range a similar yellow lily exists called L. wigginsii. I. WALL1CHIANUM (Himalayas). A distinctive white trumpet with narrow foliage. It is not really hardy and seemingly rather difficult. L. WARDII (China).